Overview
The ADM1066 Super Sequencer® from Analog Devices Inc. is a highly configurable supervisory and sequencing device designed to provide a comprehensive solution for supply monitoring and sequencing in multiple-supply systems. This single-chip device integrates a range of functionalities, including supply fault detection, sequencing, and margining control, along with auxiliary ADC inputs and DAC outputs. It is particularly useful in complex systems requiring precise voltage monitoring and control, such as servers, routers, and multivoltage system line cards.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| VH, VPx Supply Voltage | 3.0 V | 14.4 V (VH), 6.0 V (VPx) | V | Minimum and maximum supply voltage on VH and VPx | |
| VDDCAP Regulated LDO Output | 2.7 V | 4.75 V | 5.4 V | V | Regulated LDO output voltage |
| Supply Current (IVH, IVPx) | 4.2 mA | 6 mA | mA | Supply current with PDOs, DACs, and ADC off | |
| ADC Resolution | 12 Bits | Resolution of the integrated ADC | |||
| ADC Input Reference Voltage (VREFIN) | 2.048 V | V | Reference voltage for the ADC input | ||
| DAC Resolution | 8 Bits | Resolution of the integrated DACs |
Key Features
- Complete supervisory and sequencing solution for up to 10 supplies with supply fault detectors offering <0.5% accuracy at 25°C and <1.0% accuracy across all voltages and temperatures.
- Five selectable input attenuators for supervising supplies up to 14.4 V on VH and 6 V on VP1 to VP4.
- Five dual-function inputs (VX1 to VX5) that can be used as high impedance inputs to supply fault detectors or general-purpose logic inputs.
- Ten programmable driver outputs (PDO1 to PDO10) with open-collector or push/pull configurations.
- Integrated 12-bit ADC and six 8-bit voltage output DACs for margining control and supply adjustment.
- Support for closed-loop and open-loop supply margining with minimal external components.
Applications
- Servers and routers: For complex power supply monitoring and sequencing in high-reliability systems.
- Multivoltage system line cards: To manage multiple supply voltages in a single card.
- DSP/FPGA supply sequencing: Ensuring proper power-up and power-down sequences for digital signal processors and field-programmable gate arrays.
- In-circuit testing of margined supplies: For production testing to verify board functionality and adjust supply voltages as needed).
Q & A
- What is the primary function of the ADM1066 Super Sequencer?
The ADM1066 is a configurable supervisory and sequencing device designed for supply monitoring and sequencing in multiple-supply systems.
- What is the accuracy of the supply fault detectors in the ADM1066?
The supply fault detectors offer <0.5% accuracy at 25°C and <1.0% accuracy across all voltages and temperatures).
- How many programmable driver outputs does the ADM1066 have?
The ADM1066 has ten programmable driver outputs (PDO1 to PDO10)).
- What types of inputs does the ADM1066 support?
The ADM1066 supports dual-function inputs that can be used as high impedance inputs to supply fault detectors or general-purpose logic inputs).
- What is the resolution of the integrated ADC in the ADM1066?
The integrated ADC has a resolution of 12 bits).
- How many DACs are integrated into the ADM1066, and what is their resolution?
The ADM1066 integrates six 8-bit voltage output DACs).
- What are some common applications of the ADM1066?
Common applications include servers, routers, multivoltage system line cards, DSP/FPGA supply sequencing, and in-circuit testing of margined supplies).
- Can the ADM1066 perform closed-loop supply margining?
Yes, the ADM1066 supports both closed-loop and open-loop supply margining with minimal external components).
- What is the typical supply current of the ADM1066?
The typical supply current is 6 mA with PDOs, DACs, and ADC off).
- What is the reference voltage for the ADC input in the ADM1066?
The reference voltage for the ADC input is 2.048 V).
